. Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise. Fig. 1,376.—Diagram of six phase winding with star grouping, being equivalent to a threephase winding in which the three phases are disconnected from each other and theirmiddle points united at a common junction. Fig. 1,377.—Diagram of six phase winding with mesh grouping. method of getting rotation by foreign means and then to throwin the single phase curr
. Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise. Fig. 1,376.—Diagram of six phase winding with star grouping, being equivalent to a threephase winding in which the three phases are disconnected from each other and theirmiddle points united at a common junction. Fig. 1,377.—Diagram of six phase winding with mesh grouping. method of getting rotation by foreign means and then to throwin the single phase current for power. Six Phase and Twelve Phase Windings.—These arerequired for the operation of rotary converters. The phasedifference in a six phase winding is 60 degrees and in a twelve HA WKIXS ELECTRICITY phase winding 30 degrees. A six phase winding can be madeout of a three pha=e winding by disconnecting the three phasesfrom each ot: ng their middle points at a common junc- as shown by diagram fig. 1,376. This will give a rtargrouping with six terminals. In the case of a mesh grouping, each of the three phases mustbe cut into two parts and then reconnected as shown in ,377.
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